<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>3_props的简写方式</title>
  </head>

  <body>
    <div id="test1"></div>
    <div id="test2"></div>
    <div id="test3"></div>
    <script type="text/javascript" src="../js/react.development.js"></script>
    <script
      type="text/javascript"
      src="../js/react-dom.development.js"
    ></script>
    <script type="text/javascript" src="../js/babel.min.js"></script>
    <!-- 引入prop-types 用于对组件bian'q -->
    <script type="text/javascript" src="../js/prop-types.js"></script>
    <script type="text/babel">
      // 创建组件
      class Person extends React.Component {
        // 对标签属性进行类型、必要性的限制
        static propTypes = {
          name: PropTypes.string.isRequired, // 限制name必传，且为字符串
          sex: PropTypes.string, // 限制sex为字符串
          age: PropTypes.number, // 限制age为数值
          speak: PropTypes.func, // 限制speak为函数
        };
        // 指定默认标签属性值
        static defaultProps = {
          sex: "男", // sex默认为男
          age: 18, // age默认为18
        };
        render() {
          console.log(this);
          const { name, sex, age } = this.props;
          // props是只读的
          // this.props.name = "Jack"; // 这样写会报错，因为props是只读的
          return (
            <ul>
              <li>姓名：{name}</li>
              <li>性别：{sex}</li>
              <li>年龄：{age + 1}</li>
            </ul>
          );
        }
      }
      const speak = () => {
        console.log("我要说话了");
      };
      const p = {
        name: "may",
        sex: "女",
        age: 18,
      };

      // 渲染组件到页面
      ReactDOM.render(
        <Person name="tom" sex="男" age={20} speak={speak()} />,
        document.getElementById("test1")
      );
      ReactDOM.render(
        <Person name="amy" sex="女" age={19} speak={speak()} />,
        document.getElementById("test2")
      );
      ReactDOM.render(<Person {...p} />, document.getElementById("test3")); // 批量传递标签属性
      // ReactDOM.render(<Person name="may" sex="女" age="18" />, document.getElementById('test3'));
    </script>
  </body>
</html>
